2025 GMC Sierra 2500HD Denali

  • New
  • Diesel
$91,955MSRP
$78,190Castle Sale Price
Castle GMC McHenry
Location Details

    The overview

    Exterior Color
    Onyx Black
    Interior Color
    Black
    Body/Seating
    Truck/5 seats
    Seats
    5 seats
    Transmission
    10-Speed Automatic
    Drivetrain
    4WD
    Engine
    Duramax 6.6L V8 Turbodiesel
    VIN
    1GT4UREY5SF340074
    Stock Number
    M250536

      The highlights

      • Lane departure
      • Leather upholstery
      • Automatic temperature control
      • Emergency communication system
      • Wireless phone connectivity
      • Parking sensors
      • Exterior parking camera front
      • Exterior parking camera left
      • Exterior parking camera right
      • Exterior parking camera rear
      • Front dual zone A/C
      • Auto high-beam headlights

      A closer look at what’s included

      Included Options
      • Gooseneck/5th Wheel Prep Package
      • Max Trailering Package
      • Preferred Equipment Group 5SA
      • Technology Package
      • X31 Off-Road Package
      • 7 Speakers
      • AM/FM radio: SiriusXM with 360L
      • Bose Premium 7-Speaker Sound System
      • Radio: AM/FM w/Premium GMC Infotainment System
      • SiriusXM w/360L Trial Subscription
      • Steering Wheel Audio Controls
      • Air Conditioning
      • Automatic temperature control
      • Electric Rear-Window Defogger
      • Front dual zone A/C
      • Rear window defroster
      • 120-Volt Bed Mounted Power Outlet
      • 120-Volt Instrument Panel Power Outlet
      • Driver Memory
      • Memory seat
      • Power driver seat
      • Power steering
      • Power windows
      • Push Button Start
      • Remote keyless entry
      • Steering wheel mounted audio controls
      • Wireless Charging
      • Universal Home Remote
      • Manual Tilt-Wheel/Telescoping Steering Column
      • Off-Road Suspension
      • Speed-sensing steering
      • Traction control
      • 4-Wheel Disc Brakes
      • ABS brakes
      • Dual front impact airbags
      • Dual front side impact airbags
      • Emergency communication system: OnStar
      • Front anti-roll bar
      • Front wheel independent suspension
      • Keyless Open & Start
      • Low tire pressure warning
      • Occupant sensing airbag
      • Overhead airbag
      • Power Sunroof
      • Pickup Box
      • Brake assist
      • Electronic Stability Control
      • Lane Departure Warning System
      • Hill Descent Control
      • Automatic Pre-Collision Braking
      • Delay-off headlights
      • Front fog lights
      • Fully automatic headlights
      • Panic alarm
      • Security system
      • Unauthorized Entry Theft-Deterrent System
      • Speed control
      • 2-Speed Active Transfer Case
      • 220-Amp Alternator
      • Engine Block Heater
      • Exhaust Brake
      • Heavy-Duty 80 Amp Battery
      • Auto-dimming door mirrors
      • Bumpers: body-color
      • Heated door mirrors
      • IntelliBeam Automatic High Beam On/Off
      • LED Cargo Area Lighting
      • LED Smoked Amber Roof Marker Lamps
      • Polished Exhaust Tip
      • Power door mirrors
      • Power-Retractable Assist Steps
      • Rear step bumper
      • Rear Wheelhouse Liners
      • Signature Chrome Denali Grille
      • Spray-On Pickup Bedliner w/GMC Logo
      • Turn signal indicator mirrors
      • Winter Grille Cover
      • 2 Charge-Only Rear USB Ports
      • 2 Charge/Data USB Ports Inside Center Console
      • 2 USB Ports
      • Apple CarPlay/Android Auto
      • Auto-dimming Rear-View mirror
      • Automatic Emergency Braking
      • Bed View Camera w/2 Trailer Camera Provisions
      • Buckle to Drive
      • Compass
      • Driver door bin
      • Driver vanity mirror
      • Floor-Mounted Center Console
      • Following Distance Indicator
      • Forward Collision Alert
      • Front Pedestrian Braking
      • Front reading lights
      • Garage door transmitter
      • Genuine wood dashboard insert
      • Genuine wood door panel insert
      • HD Surround Vision
      • Heated steering wheel
      • Illuminated entry
      • Inside Rearview Auto-Dimming Rear Camera Mirror
      • Multicolor 15" Diagonal Head-Up Display
      • OnStar Services Capable
      • Outside temperature display
      • Overhead console
      • Passenger vanity mirror
      • Power UltraView Double-Sized Sunroof
      • Rear Cross Traffic Alert
      • Rear reading lights
      • Rear seat center armrest
      • Tachometer
      • Telescoping steering wheel
      • Tilt steering wheel
      • Trailer Cam Provisions & Trailer Viewing Software
      • Trailer Side Blind Zone Alert
      • Trip computer
      • Voltmeter
      • Wireless Phone Projection
      • 12-Way Power Driver Seat Adjuster w/Lumbar
      • 12-Way Power Passenger Seat Adjuster w/Lumbar
      • Forge Perforated Leather-Appointed Front Seat Trim
      • Front Bucket Seats
      • Front Center Armrest
      • Heated 2nd Row Outboard Seats
      • Heated Driver & Front Outboard Passenger Seats
      • Heated front seats
      • Heated rear seats
      • Power passenger seat
      • Safety Alert Seat
      • Split folding rear seat
      • Ventilated Driver & Front Passenger Seats
      • Ventilated front seats
      • Passenger door bin
      • Hitch Guidance w/Hitch View
      • In-Vehicle Trailering System App
      • Alloy wheels
      • Wheels: 20" Ultra Bright Machined
      • Deep-Tinted Glass
      • Front Rain-Sensing Wipers
      • Power Front Passenger Windows w/Express Up/Down
      • Power Sliding Rear Window w/Defogger
      • Rain sensing wipers
      • Variably intermittent wipers
      • 1-touch down
      • 1-touch up
      • Adaptive Cruise Control
      • Air conditioning
      • Auto-dimming rearview mirror
      • Automatic temperature control
      • Driver door bin
      • Driver vanity mirror
      • Emergency communication system: OnStar
      • Front beverage holders
      • Front dual zone A/C
      • Garage door transmitter
      • Heated steering wheel
      • Illuminated entry
      • Memory seat
      • Overhead console
      • Passenger door bin
      • Passenger vanity mirror
      • Power windows
      • Proximity key: doors and push button start
      • Rear beverage holders
      • Rear door bins
      • Remote engine start
      • Remote keyless entry
      • Speed control
      • Surround View Monitor: HD Surround Vision w/Hitch View yes
      • Telescoping steering wheel
      • Tilt steering wheel
      • Alloy wheels
      • Front anti-roll bar
      • Front wheel independent suspension
      • Power steering
      • Single rear wheels
      • Speed-sensing steering
      • Tires: all-terrain
      • 1st row LCD monitors: 2
      • Primary LCD size: 13.4"
      • Smart device integration: Apple CarPlay/Android Auto
      • Speaker type: Bose
      • Speakers: 7
      • Steering wheel mounted audio controls
      • Turn-by-turn navigation directions: OnStar Turn-by-Turn Navigation
      • Wireless Phone Charger: front
      • Wireless phone connectivity: Bluetooth
      • Basic warranty: 36 months/36,000miles
      • Corrosion perforation warranty: 72 months/100,000miles
      • Maintenance warranty: 12 months/ unlimited distance
      • Front center armrest
      • Front seats: bucket
      • Genuine wood dashboard insert
      • Genuine wood door panel insert
      • Heated front seats
      • Heated rear seats
      • Leather upholstery
      • Max seating capacity: 5
      • Power 4-way driver lumbar support
      • Power 4-way passenger lumbar support
      • Power driver seat
      • Power passenger seat
      • Rear seat center armrest
      • Rear seats: split-bench
      • Rear seats Folding position: fold-up cushion
      • Seat Upholstery: leather
      • Split folding rear seat
      • Ventilated front seats
      • Cylinder configuration: V-8
      • Drive type: four-wheel
      • Engine liters: 6.6L
      • Engine location: front
      • Fuel tank capacity: 36.0gal.
      • Hybrid traction battery type: none
      • Manual-shift auto
      • Mode select transmission
      • Rear locking differential
      • Transmission: 10 speed automatic
      • Variable valve control
      • Ground clearance (min): 257mm (10.1")
      • Auto-dimming door mirrors
      • Bedliner
      • Bumpers: body-color
      • Door mirrors: chrome
      • Heated door mirrors
      • Hitch Class: IV
      • Left rear passenger door: conventional
      • Power door mirrors
      • Rear cargo: tailgate
      • Rear step bumper
      • Right rear passenger: conventional
      • Skid plates
      • Tailpipe finisher: polished
      • Trailer hitch
      • Trailer sway control
      • Turn signal indicator mirrors
      • Engine displacement: 6.6 L
      • Exterior body width: 2,079mm (81.8")
      • Exterior height: 2,027mm (79.8")
      • Exterior length: 6,369mm (250.8")
      • Front headroom: 1,093mm (43.0")
      • Front hiproom: 1,554mm (61.2")
      • Front legroom: 1,131mm (44.5")
      • Front shoulder room: 1,677mm (66.0")
      • Rear headroom: 1,019mm (40.1")
      • Rear hiproom: 1,530mm (60.2")
      • Rear legroom: 1,102mm (43.4")
      • Rear shoulder room: 1,659mm (65.3")
      • Turning radius: 8.0m (26.3')
      • Wheelbase: 4,039mm (159.0")
      • Appearance: digital/analog
      • Auto high-beam headlights
      • Blind spot: Trailer Side Blind Zone Alert warning
      • Compass
      • Configurable
      • Delay-off headlights
      • Exterior parking camera cargo
      • Exterior parking camera front
      • Exterior parking camera left
      • Exterior parking camera rear: HD Rear Vision Camera w/Hitch View yes
      • Exterior parking camera right
      • Front fog lights
      • Front reading lights
      • Fully automatic headlights
      • Lane departure: Lane Departure Warning warning
      • Low tire pressure warning
      • Oil pressure gauge
      • Outside temperature display
      • Parking sensors: UltraSonic front and rear
      • Rain sensing wipers
      • Rear reading lights
      • Rear window defroster
      • Tachometer
      • Trip computer
      • Variably intermittent wipers
      • Voltmeter
      • 4 wheel disc brakes
      • ABS brakes
      • Brake assist
      • Dual front impact airbags
      • Dual front side impact airbags
      • Electronic stability
      • Forward collision: Forward Collision Alert with Automatic Braking mitigation
      • Front pedestrian detection: prevention
      • Ignition disable
      • Occupant sensing airbag
      • Overhead airbag
      • Panic alarm
      • Perimeter/approach lights
      • Rear collision: Rear Cross-Traffic Alert warning
      • Security system
      • Traction control
      Meet the 2025 GMC Sierra 2500HD Denali in striking black, powered by the formidable Duramax 6.6L V8 Turbodiesel engine paired with a 10-speed automatic transmission and 4WD capability. This premium heavy-duty truck represents the pinnacle of capability and refinement, built to handle serious work while delivering the comfort of the Denali nameplate.

      â€" Duramax 6.6L V8 Turbodiesel with 10-Speed Automatic and 4WD
      â€" Power-Retractable Assist Steps with LED Perimeter Lighting
      â€" Power Sunroof with UltraView Double-Sized Design
      â€" Technology Package with Multicolor 15" Head-Up Display
      â€" Max Trailering Package with Gooseneck/5th Wheel Prep
      â€" Bose Premium 7-Speaker Sound System with SiriusXM 360L Trial
      â€" Signature Chrome Denali Grille with Polished Exhaust Tip
      â€" Spray-On Pickup Bedliner with GMC Logo
      â€" Bed View Camera with Trailer Camera Provisions
      â€" HD Surround Vision and Inside Rearview Auto-Dimming Rear Camera Mirror

      The cabin showcases Denali luxury with heated and ventilated front seats, heated rear outboard seats, and a heated steering wheel. The infotainment system delivers wireless phone projection, Apple CarPlay/Android Auto compatibility, and premium connectivity through OnStar services. Advanced safety features include automatic emergency braking, lane departure warning, trailer side blind zone alert, and hill descent control, all working together to keep you confident on any road or jobsite.

      With the X31 Off-Road Package and 2-Speed Active Transfer Case, this Sierra 2500HD is engineered for both pavement and challenging terrain. The Max Trailering Package combined with the gooseneck prep capability makes this truck ready for serious hauling demands. Come experience this powerfully equipped Denali truck and discover why it's the choice for those who refuse to compromise on capability or comfort.

      Peace of mind

      Factory warranty

      36 months/36,000miles from the vehicle's original in-service date

      A name you can trust

      Castle Buick GMC is dedicated to your satisfaction before, during, and after your purchase. We'll go the extra mile to take care of you.
      More about us

      KBB.com Consumer Reviews

      Kelley Blue Book Logo0.0out of 5 overall
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          Disclaimer: The Manufacturer’s Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.

          1Dealer Discount applied to everyone